Dale, Ernest, author
McGraw-Hill, 1960
Buku Teks
Adam, Bob
1997
Multimedia
Sampson, Robert C., author
Harper & Row, 1955
Buku Teks
edited by Wendell L. French and Don Hellriegel
Houghton Mifflin, 1971
Buku Teks
Argyris, Chris, author
John Wiley & Sons, 1964
Buku Teks